android-discuss, Text to speech library on Android...

1. Multi activity app

Hi all.
I have application with several activities and I want to find the best
way to switch between activities. Maybe, the simpliest way is to use
Intent to start one activity from another:

        Intent intent = new Intent(First.this, Second.class);
        startActivity(intent);

It works fine, but in this case, every time I want to show one
activity from another an new instance of activity will be created.
It's not a very good situation :(

So the question is: maybe there is some more optimized methods to
switch between activities?

Thanks

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2. Howto: Grid with sound feedback

Hi,

I intend to have a grid on the screen (say 4 X 4) wherein a touch on
one of the 16 cells will result in a sound being produced/emitted.

So if somebody touches the cell in Row 3 and Column 2, a sound of a
particular frequency/pitch will be emitted/played. Similarly if
somebody touches the cell in Row 2 Column 1, a different frequency/
pitch will be emitted/played.

But I am not sure how can I do this with touch? Whats the easiest way
to do this?

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